Search Dictionary
Definition of conscientious

conscientious

/ˌkɑːn.ʃiˈen.ʃəs/
con · sci · en · tious
Adverb:conscientiously
JUMP TO:

conscientious Lexical Profile

conscientious Game Scores & Validity

• adjective

1

Wishing to do one's work or duty well and thoroughly; characterized by extreme care and great effort.

Example

"The conscientious archivist double-checked every historical manuscript before cataloging it."

2

Governed by or conforming to the dictates of conscience; principled and ethical.

Example

"As a conscientious objector, he requested non-combatant medical duties on moral grounds."

Synonyms
View all synonyms for conscientious
Antonyms
View all antonyms for conscientious

Word Nuance & Usage

Often confused with 'conscious' (aware and awake); 'conscientious' specifically means diligent, thorough, or guided by one's moral conscience.

• Rhymes for conscientious

• Nearby Words

conquest
conquistador
conscience
conscientious
conscientiously
conscientiousness
conscious

Word Origin & Etymology

Borrowed in the early 17th century from Middle French conscientieux, derived from Medieval Latin conscientiosus, from Latin conscientia ('knowledge within oneself' or 'conscience').

Cite this Entry

Wordmom. (2026). Definition of Conscientious. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/conscientious
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.